Original price was: £78.33.£54.51Current price is: £54.51.
The IMO IS4P100 is a heavy-duty 100 A four-pole enclosed rotary isolator switch designed to provide safe and dependable local isolation for industrial machinery, commercial installations and electrical distribution equipment. Its four-pole configuration enables the simultaneous disconnection of three phase conductors and a neutral conductor, making it suitable for three-phase plus neutral systems.
Housed in a durable IP65-rated flame-retardant polycarbonate enclosure, the IS4P100 offers effective protection against dust and water ingress for demanding indoor and outdoor environments. A highly visible lockable rotary handle provides clear ON and OFF operation and can help prevent unauthorised reconnection while maintenance is being carried out.
The enclosure features an interlocked lid, external mounting points and multiple cable-entry knockouts for straightforward installation. With a rated three-phase motor capacity of 37 kW at 415 V AC and a maximum cable capacity of 35 mm², the IMO IS4P100 is well suited to higher-current machinery, motor and distribution applications.
The IMO IS4P100 provides a clearly defined means of disconnecting higher-current electrical equipment before inspection, maintenance or repair work begins. Its four-pole switching mechanism disconnects all three phases and the neutral conductor through one manual operation, helping provide complete circuit isolation where required.
The lockable handle and interlocked enclosure lid support controlled maintenance procedures, while the IP65 housing helps protect the isolator in dusty or wet environments. An optional IMO SAC150-11 auxiliary contact may also be fitted where remote status indication or control-circuit signalling is required.
| Current | 100 A |
|---|---|
| Voltage | 440 V |
| Phase | Three Phase |
The IMO IS4P100 is used to provide safe local isolation for higher-current three-phase machinery, motors, HVAC equipment and electrical distribution systems.
The isolator has a rated operational current of 100 A under the AC-21 utilisation category.
It is rated for a three-phase motor power of up to 37 kW at 415 V AC under the AC-23A utilisation category.
Yes. Its enclosure has an IP65 protection rating, providing protection against dust and water jets when correctly installed.
Yes. The rotary operating handle can be locked to help prevent unauthorised operation or accidental reconnection during maintenance.
Yes. The compatible IMO SAC150-11 auxiliary contact provides one normally open and one normally closed contact for signalling or control applications.
IMO enclosed rotary isolators are specified by electrical contractors, machine builders and industrial engineers for dependable isolation, robust environmental protection and reliable operation in demanding electrical installations.{ "@context": "https://schema.org/", "@type": "Product", "name": "IMO IS4P100 Enclosed Rotary Isolator 100 A 4 Pole IP65", "sku": "IS4P100", "mpn": "IS4P100", "brand": { "@type": "Brand", "name": "IMO" }, "category": "Enclosed Rotary Isolator Switches", "description": "IMO IS4P100 enclosed 100 A four-pole rotary isolator with an IP65 polycarbonate enclosure, lockable handle and 37 kW motor rating at 415 V AC.", "additionalProperty": [ { "@type": "PropertyValue", "name": "Rated operational current", "value": "100 A AC-21" }, { "@type": "PropertyValue", "name": "Number of poles", "value": "4" }, { "@type": "PropertyValue", "name": "Rated operating voltage", "value": "230–440 V AC" }, { "@type": "PropertyValue", "name": "Motor rating", "value": "37 kW at 415 V AC, AC-23A" }, { "@type": "PropertyValue", "name": "Protection rating", "value": "IP65 enclosure" }, { "@type": "PropertyValue", "name": "Maximum cable size", "value": "35 mm²" }, { "@type": "PropertyValue", "name": "Dimensions", "value": "240 × 160 × 120 mm" } ] } { "@context": "https://schema.org", "@type": "FAQPage", "inLanguage": "en-GB", "mainEntity": [ { "@type": "Question", "name": "What is the IMO IS4P100 used for?", "acceptedAnswer": { "@type": "Answer", "text": "The IMO IS4P100 is used to provide safe local isolation for higher-current three-phase machinery, motors, HVAC equipment and electrical distribution systems." } }, { "@type": "Question", "name": "What is the current rating of the IS4P100?", "acceptedAnswer": { "@type": "Answer", "text": "The isolator has a rated operational current of 100 A under the AC-21 utilisation category." } }, { "@type": "Question", "name": "What motor size can the IS4P100 control?", "acceptedAnswer": { "@type": "Answer", "text": "It is rated for a three-phase motor power of up to 37 kW at 415 V AC under the AC-23A utilisation category." } }, { "@type": "Question", "name": "Is the IMO IS4P100 suitable for outdoor installation?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. Its enclosure has an IP65 protection rating, providing protection against dust and water jets when correctly installed." } }, { "@type": "Question", "name": "Can the rotary handle be locked?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. The rotary operating handle can be locked to help prevent unauthorised operation or accidental reconnection during maintenance." } }, { "@type": "Question", "name": "Can an auxiliary contact be fitted?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. The compatible IMO SAC150-11 auxiliary contact provides one normally open and one normally closed contact for signalling or control applications." } } ] }
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...